<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript">
        //表示要求字符串中，是否包含字母e
        var patt = new RegExp("(\\s+)(2)(3)");
        str = "123456";
        alert(patt.test(str))
    </script>
</head>
<body>

</body>
</html>